When Javier Hernandez scores goals the smile on his face radiates both joy and a sense of a job well done. But when the Mexican sharp-shooter scored Manchester United's fourth against Aston Villa on Saturday, he merely stared blank-faced at the Stretford End.
Of course it was more a cherry on the cake than a difference-making goal, but for a man who seems to have been born to put the ball in the net it was an unexpected reaction.
There have been reports suggesting Hernandez could leave Old Trafford - some even claiming he was set for a January departure only for the plug to be pulled at the 11th hour - but one thing is for sure: the 25-year-old is not getting the games his talent deserves.
That is no surprise when you consider those ahead of him in the pecking order - most notably Wayne Rooney and Robin van Persie - but it is still a shock that Chicharito has scored just three league goals all season (and just eight in all competitions).
And now he has taken to Instagram to post a message to his fans, along with a picture of him taking part in training ahead of the Champions League quarter-final first-leg against Bayern Munich.
'Keep working no matter what...' he wrote, and while previous messages have been misconstrued there is a suggestion that things have not gone according to plan for a player who burst onto the scene in his first season at United.
And yet as his latest comment suggests, he is a consummate professional, always working, always waiting for that next chance.
So do not be surprised if he pops up with the winner against the reigning European champions. And smiles wider than ever before as a result.